Method of removing superfluous powder or dust from bronze prints.



UNITED STATES PATENT OFFICE.

GEORGEG. TORLINA, or CINCINNATI, OHIO.

METHOD OF REMOVING SUPERFLUOUS POWDER 0R DUST FROM BRONZE PRlNTSi SPECIFICATION forming part of Letters Patent No; 628,563; dated. July 11, 1899. Application filed October 20,1898. Serial No. 694 077. (No specimens.)

To all whom it may concern/.-

Be it known that I, GEORGE G. TORLINA, a citizen of the United'Stat'es, residing at Oincinnati. in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Methods of Removing Superfluous Powder or Dust from Bronze Prints, &c.; and I do hereby declare the following to be a full, clear, and exact description of the invention.

In a certain kind of printing an impression is first taken from a form witha size or tacky ink and then before the ink has had time to set the print is coated with a fine metallic powder or dust, thereby imparting to the letters, 850., a bright color or luster. This powder, technically known as bronze, adheres only to the letters, &c., and the loose superfluous dust is subsequently removed from the cardboard or other material upon which the impression was made. Frequently the removal of this waste bronze is efiected by mechanical means; but in other cases the operation is performed by hand, brushes or loosecotton rubbers being passed lightly over the surface of the print.-

The object of my invention is to get rid of the waste bronze Withoutemploying ma-.

chinery of any kind or using brushes or cotton or other rubbers, and I accomplish this result by subjecting the print to the action of any suitable abradent. Preferably this abradent is pulverized glass, the use of which material speedily removes all superfluous bronze and has noinjurious effect on the surface of the cardboard. The exact method of applying said abradent is immaterial, the only precaution being to distribute it lightly and evenly over the cardboard.

Finally, my invention can be utilized for removing superfluous material from flock printing or any other kind of printingwhere the displayed features are produced by causing a powder or dust of any kind to adhere to a sized surface.

I claim as my invention The within-described process of removing superfluous powder or dust from bronze prints, &c;, which process consists in sub jecting them to the action of an abradent after the powder or dust has adhered to such prints;

In testimony whereof I affix my signature in presence of two witnesses.

- GEORGE G. TORLINA.

Witnesses:

JAMES H. LAYMAN, JOHN 0. ROGERS. 

